.content4 {
            height: 134px;
        }

        .content4 ul li {
            float: left;
            overflow: hidden;
            margin-right: 12px;
            width: 291px;
            height: 134px;
        }

        .content4 ul li a {
            display: inline-block;
            width: 291px;
            height: 134px;
            transition: all 0.4s;
        }

        .content4 ul li a:hover {
            transform: scale(1.1)
        }

        .content4 ul li:nth-of-type(1) a {
            background: url(../img/zuge.jpg);
        }

        .content4 ul li:nth-of-type(2) a {
            background: url(../img/libai.png);
        }

        .content4 ul li:nth-of-type(3) a {
            background: url(../img/mengkuo.png);
        }

        .content4 ul li:last-of-type a {
            background: url(../img/kpl.jpg);
        }

        .content4 ul li:last-of-type {
            margin-right: 0;
        }